Of the beam that blocked the sound waves will be returned / reflected back to the receiver in the f

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Hydrography is one branch of science in the field of marine geodesy. Hydrographic survey itself can generally be identified by the keyword is "mapping the sea and coastal areas".
According to the International Hydrographic Organization (IHO) hydrographic defined as the science of measuring and describing the parameters needed to describe the properties and configuration of the seabed precisely, its geographical relationship food concession trailers with the mainland, as well as the characteristics and dynamics of the ocean.
In etimilogi, hydrography derived from the Greek word consisting food concession trailers of the words "hydro" meaning water and "radiography" which means writing, Hydrographic picture means that flooded the earth's surface.
Survey carried out by the beach only by the scope of the location on the beach alone, focusing on the shore and some seaside components containing sediment and sediment character area is located on the shore are still influenced by the nature of the beach.
Sonar is a technique that uses sound propagation under water is used for direction, communications or detect ships. Sonar system can be defined as a method of determining the position of the acoustic food concession trailers (acoustic location). The use of a position with the acoustic method has been used long before adnya radar technology.
Sidescan sonar is a tool to get an overview of the basic surface waters by using sound waves. Sidescan system sends an acoustic pulse at the side of the receiver and record the amplitude of the feedback pulse energy emitted by the sensor. Each beam pulse, food concession trailers a small lane (approximately 100 to 200 m to each side) from the ocean floor mapped.
Each pergerakn ship, lane to lane mapped. On a perfectly flat sea floor all the energy is reflected from sesor sonar and no signal is recorded. In fact, the ocean floor is not perfectly flat. Irregularities such as rocks and ripples due to the reflection (backscatter) of the acoustic energy, and the system can provide the rough information food concession trailers seabed food concession trailers circumstances.
It is a system identifier and pegukur variation of sediment layers that exist below the surface of the water. Acoustic system used in the determination of the sub-bottom food concession trailers profiling tool is similar to the echosounder. Sound source emits a signal vertically downwards and receiver trace water monitor feedback signal which has been reflected seabed. The boundaries food concession trailers between the two layers have different acoustic characteristics (acoustic acoustic impedance = obstacle).
Acoustic obstacles related to the level of viscosity or specific gravity (density) food concession trailers of the material content and level of material tracing the speed of sound. When there is a change in the acoustic barrier, such as a display face underwater sediment, which passed on a voice part and then reflected back.
Of the beam that blocked the sound waves will be returned / reflected back to the receiver in the form of data that shows the profile of the sea floor / barrier proficiency level given the uneven seabed. From some of the sound energy penetrates into the boundary layer and sediment. This energy is reflected when it penetrates the boundary between sediment layers deeper obstacles that have different acoustics. This system uses the energy reflected by the layers to form a cross-section of daribagian sub-bottom sediment layers. Some of the sonar parameters (power output, food concession trailers the frequency of the signal, and the pulse wavelength emitted) affect the performance of the tools used.
Single-beam echo sounder is an instrument measuring food concession trailers water depth using a single beam as the sender and receiver of sound waves. System using a single beam bathymetry generally have a composition: food concession trailers transciever (transducer / receiver) food concession trailers that is attached to the hull or side bearings on the ship. This system measures the water depth directly from the ship investigation.
Transciever which is attached to the hull sends acoustic pulses with high frequency food concession trailers contained in the beam (sound waves) directly along the bottom of the water column. Reflect the acoustic energy to the seabed of the ship and received back by tranciever.
Transciever consists of a transmitter that has a function as a control pulse wavelength emitted and provide electrical power for the frequencies were given. The transmitter accepts both be